This document discusses how dwell time, or the amount of time spent actively engaging with an online ad, can impact brands. It finds that ads with higher dwell times are 25x more likely to engage users than ads that are just clicked. Higher dwell times also correlate with increased search behavior, traffic to a brand's website, and online engagement. This suggests that online ads which encourage longer active viewing have stronger effects on brands than clickthrough rates alone. Dwell time is presented as a better metric than clickthroughs for measuring and comparing the impact of online advertising on a brand.